According to Wikipedia, world governments spent over $35 trillion last year. This guy is saying $5.7 billion will SOLVE world hunger? What are the governments

According to Wikipedia, world governments spent over $35 trillion last year. This guy is saying $5.7 billion will SOLVE world hunger? What are the governments of the world doing with $35 trillion every 12 months that isn't solving world hunger, but somehow if they could only spend $35.0057 trillion we'd be in utopia? I mean, US foreign aid alone is $300 billion per year. That's evidently 52x the number to solve world hunger, being spent annually on foreign aid by one country. I think this guy's estimates are way off. It's just too difficult to believe that world hunger is a one-time payment away from being history. If his numbers are correct, it's clearly not a government funding issue, but a government budgeting issue.